An automatic sampling and concentration detecting device for disinfectant residue

Abstract

The application discloses a disinfectant residue automatic sampling and concentration detection device, and belongs to the technical field of disinfectant detection. The disinfectant residue automatic sampling and concentration detection device comprises a moving frame, and a linear vibration assembly is installed on the top of a spectrophotometer. The linear vibration assembly is used for linear oscillation of the residual liquid to promote mixing of the to-be-detected liquid and a chromogenic reagent. Sampling assemblies are fixedly connected to the inner walls of the moving frames on the two sides of a control panel, and are used for sampling and quantitative transfer of the disinfectant residual liquid. The sampling assemblies and the linear vibration assembly are adopted to make the residual liquid obtained by one-time sampling of the sponge be used for rapid preliminary screening of test paper and accurate detection of the spectrophotometer. The rapid semi-quantitative result of the test paper method is compared and verified with the accurate quantitative result of the spectrophotometry, the credibility of the final data is improved, and rapid on-site detection is realized.

Description

Technical Field

[0001] This invention belongs to the field of disinfectant detection technology, specifically relating to an automatic sampling and concentration detection device for disinfectant residues. Background Technology

[0002] Disinfectants are chemical solutions used to kill or inhibit bacteria, viruses, and other pathogenic microorganisms. They are widely used in hospitals, homes, public places, and various industries to ensure hygiene and safety. However, disinfectants often contain chemical components, and if large amounts remain in the environment, they can harm the ecosystem. Therefore, it is necessary to test the residual concentration of disinfectants and take timely measures to prevent environmental pollution, thereby protecting the ecological balance. At the same time, disinfectants can also provide a reference for the research and development of new products and the improvement of existing products, thus promoting the upgrading of disinfection technologies and products.

[0003] In reality, residual disinfectant liquids may contain not only effective disinfectant components (such as sodium hypochlorite and quaternary ammonium salts), but also detergents, thickeners, grease contaminants, or dissolved substances from surfaces. These impurities can significantly alter the physical properties of the liquid. Traditionally, testing residual disinfectant liquids requires manual sampling followed by laboratory testing using spectrophotometry to determine concentration. This method cannot achieve rapid on-site testing and is particularly unsuitable for scenarios requiring high-frequency, multi-site testing, such as hospitals and public places. Manual sampling is inefficient and prone to contamination or loss during sample evaporation and transfer, leading to inaccurate test results. Furthermore, the residual liquid may contain impurities such as detergents and grease, further affecting sample purity. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an automatic sampling and concentration detection device for disinfectant residue.

[0005] The technical solution adopted to solve the above technical problems is: an automatic sampling and concentration detection device for disinfectant residue, including a movable frame, and several universal wheels are installed at the bottom corners of the movable frame. At the same time, a control panel is installed in the middle of one side of the top of the movable frame. A handrail is provided on the top of the movable frame located on the side of the control panel. A spectrophotometer is installed on the top of the movable frame away from the control panel. A linear vibration component is installed on the top of the spectrophotometer for linearly oscillating the residual liquid to promote the mixing of the test liquid and the colorimetric reagent. Sampling components are fixedly connected to the inner walls of the movable frames located on both sides of the control panel for sampling and quantitative transfer of residual disinfectant liquid.

[0006] With the above technical solution, the entire process does not require manual intervention in sample allocation. Qualitative and quantitative dual detection can be completed in one sampling, which greatly shortens the detection cycle and avoids the deviation that may be caused by "sampling twice". For example, the residual components of disinfectant will evaporate when sampling at different times, the residual concentration will be uneven when sampling at different locations, and there will be contamination or loss when manually transferring samples. Homologous samples ensure that the color reaction of the test strip method and the absorbance detection of the spectrophotometer method reflect the true concentration of the same residual liquid. The two results can be directly compared and mutually verified, avoiding detection contradictions caused by sample differences.

[0007] Furthermore, the linear vibration assembly includes a connecting frame that is fixedly mounted on the top of the spectrophotometer, and the connecting frame is arranged in an L-shape. Two placement slots are opened on one side of the top of the connecting frame. A through hole is opened through the side of the connecting frame facing the control panel, and the through hole is located in the middle of the placement slot of the connecting frame. Test paper is placed in the placement slot of the connecting frame. Colorimetric paper is pasted on the middle of one side of the connecting frame, and the colorimetric paper and the through hole are on the same plane. Hollow slots are opened through both sides of the connecting frame.

[0008] Through the above technical solution, the reset springs on both sides of the slider provide buffering and reset force, making the oscillation action smooth and uniform in amplitude, driving the test tube locked in the slider to vibrate synchronously and linearly, ensuring that the test solution and colorimetric reagent in the test tube are in full contact and react fully, avoiding concentration calculation deviations caused by incomplete local reactions.

[0009] Furthermore, a slider is provided in the hollow groove of the connecting frame, and the slider is slidably connected to the connecting frame. At the same time, the connecting frame limits the slider. The top of the slider is set with an inverted conical structure, and a test tube is locked inside the slider. The bottom of the test tube is located inside the spectrophotometer. Return springs are fixedly connected to both sides of the slider, and the other end of the return spring is fixedly connected to the inner wall of the connecting frame. The bottom of the connecting frame away from the control panel is set in an open state. The two sliders facing the open end of the connecting frame are respectively rotatably connected to the second protrusion, and the ends of the second protrusions away from the sliders are rotatably connected to each other.

[0010] Through the above technical solution, even oscillation can break the encapsulation of impurities on the effective components in complex residual liquids containing detergents, greases and other impurities, allowing the colorimetric reagent to fully combine with the disinfecting effective components (such as sodium hypochlorite and quaternary ammonium salts), thereby improving the accuracy of the test results in reflecting the true residual concentration.

[0011] Furthermore, an L-shaped connecting seat is rotatably connected to one side of the second protruding rod, and the L-shaped connecting seat is located at the connection point of the second protruding rod. At the same time, the L-shaped connecting seat is away from the second protruding rod. A second bevel gear is drivenly connected to one side of the first bevel gear, and the second bevel gear is rotatably connected to the L-shaped connecting seat. A drive rod is slidably connected to the second bevel gear.

[0012] Furthermore, a limiting strip is welded to the outer wall of the drive rod, and the drive rod does not contact the L-shaped connecting seat. The limiting strip of the drive rod limits the second bevel gear, and both ends of the drive rod are rotatably connected to the connecting frame. A servo motor is installed on one side of the connecting frame, and a transmission shaft is installed at the output end of the servo motor. The transmission shaft at the output end of the servo motor is rotatably connected to the connecting frame through it, and the through end of the transmission shaft at the output end of the servo motor is fixedly connected to the drive rod.

[0013] Through the above technical solution, the sponge actually acts as a primary filter when it squeezes and contacts the test paper. Large particles and some fibrous impurities may be blocked by the sponge and will not enter the test tube. The liquid dripped into the test tube is relatively clear, which reduces the possibility of direct interference with the spectrophotometric optical path and improves the success rate and accuracy of precision detection.

[0014] Furthermore, the sampling component includes a T-shaped frame fixedly connected to both sides of the inner wall of the movable frame, and the T-shaped frame has a second sliding groove through it. The two ends of the second sliding groove are long strip-shaped through grooves, and the middle of the second sliding groove is a semi-arc-shaped through groove. At the same time, the two ends of the second sliding groove are set at a 90-degree angle. A swing plate is rotatably connected to the side of the T-shaped frame away from the movable frame, and the bottom of the swing plate is hollow. A slide plate is set at the bottom of the swing plate, and the slide plate is slidably connected to the swing plate. At the same time, the swing plate limits the slide plate. Limiting rods are welded to both sides of the top of the slide plate, and spring rods are installed on both sides of the bottom of the slide plate.

[0015] Through the above technical solution, the squeezing action applies stable and controllable pressure, ensuring that the reaction area of ​​the test strip is fully and evenly wetted, avoiding uneven application, local over-drying or over-wetting that may be caused by manual application, making the test strip more uniform in color development and more accurate in color difference interpretation.

[0016] Furthermore, the limiting rod facing the T-shaped frame is located in the second slide groove, and the limiting rod slides along the long strip through groove of the second slide groove and is guided and constrained by it. At the same time, the limiting rod is slidably connected to the T-shaped frame. A hollow tube is fixedly connected through the middle of the slide plate, and a sponge is installed at the bottom of the hollow tube. A flexible tube is installed at the top of the hollow tube. The sponge and the through hole are on the same straight line. A vacuum pump is installed at the other end of the flexible tube, and the vacuum pump is fixedly installed at the top of the movable frame. The vacuum pump is connected to the hollow tube through the flexible tube.

[0017] The above technical solution integrates the three functions of sampling, dispensing, and pretreatment (squeezing) into a smooth mechanical action cycle (extension-flipping-extension), eliminating the need for additional steps and equipment such as pipetting and pouring, and shortening the time from sampling to obtaining preliminary (test strip) results.

[0018] Furthermore, a rotating rod is rotatably connected to the top of one side of the T-shaped frame, and a first sliding groove is opened through the end of the rotating rod away from the T-shaped frame. The limiting rod on the side of the sliding plate away from the T-shaped frame is located in the first sliding groove, and the limiting rod is slidably connected to the rotating rod. At the same time, the limiting rod slides along the first sliding groove axially and is limited and constrained by it.

[0019] Furthermore, a connecting rod is rotatably connected to the top of the side of the rotating rod away from the T-shaped frame, and a protruding rod is rotatably connected to the other end of the connecting rod. At the same time, the other end of the protruding rod is rotatably connected to the T-shaped frame. The T-shaped frames located on both sides of the movable frame are rotatably connected to synchronous belt assemblies, and the synchronous pulley connecting shaft at the top of the synchronous belt assembly is rotatably connected to the T-shaped frame through it. At the same time, the through end of the synchronous pulley connecting shaft at the top of the synchronous belt assembly is fixedly connected to the protruding rod.

[0020] Furthermore, a fixing rod is fixedly connected through the synchronous pulleys at the bottom of the synchronous belt assembly located on both sides of the movable frame, and both ends of the fixing rod are rotatably connected to the inner wall of the movable frame. A drive motor is installed on one outer wall of the movable frame, and a transmission shaft is installed at the output end of the drive motor. At the same time, the transmission shaft at the output end of the drive motor is rotatably connected through the movable frame, and the through end of the transmission shaft at the output end of the drive motor is fixedly connected to the fixing rod.

[0021] Through the above technical solution, vacuum assistance allows the liquid to be more fully and quickly adsorbed into the core of the sponge. In the subsequent flip-squeeze step, the liquid can be released from the core of the sponge in a more controllable and complete manner, which improves the accuracy and repeatability of the liquid volume dropped into the test tube and provides a more stable sample volume for spectrophotometry.

[0022] The beneficial effects of the present invention are as follows: (1) The present invention adopts a sampling component, drives the motor to drive the fixed rod to rotate, drives the first protruding rod of the T-shaped frame on both sides through the synchronous belt component, and then drives the sliding plate to automatically complete the whole process of "descending close to the surface of residual liquid, adsorbing and sampling, rising, turning 90°, horizontally transferring to the detection position, and resetting". During the transfer, the sponge squeezes the test paper at the through hole so that the sampling liquid and the test paper react fully. The excess sample flows into the test tube naturally through the inverted cone structure at the top of the slider, realizing the dual sample allocation of "test paper preliminary screening + test tube accurate detection". The objects analyzed by the two detection methods are completely from the residual liquid in the same area of ​​the surface and at the same time point. The results are absolutely comparable. The rapid semi-quantitative results of the test paper and the accurate results of the subsequent spectrophotometric method can be referenced to each other. If the difference is within a reasonable range, the overall credibility is enhanced. If an unexpected deviation occurs, it immediately indicates that there may be special interference in this sampling or sample. (2) By using a linear vibration component, the servo motor drives the bevel gear set (bevel gear 1 and bevel gear 2) and the connecting rod (protruding rod 2 and connecting rod 2) to convert the rotational motion into the linear reciprocating motion of two sliders in opposite directions, thereby "shaking" the liquid in the test tube, so that the sample in the test tube is fully and quickly mixed with the neutralizing agent / color developing agent, ensuring complete reaction and laying the foundation for the accuracy of spectrophotometric detection. Attached Figure Description

[0023] Figure 1 This is a first-view structural schematic diagram of the present invention; Figure 2 This is a schematic diagram of the second perspective structure of the present invention; Figure 3 This is a schematic diagram of the third-view structure of the present invention; Figure 4 This is a schematic diagram of the fourth perspective structure of the present invention; Figure 5 yes Figure 3 A magnified structural diagram at point A; Figure 6 yes Figure 4 A magnified structural diagram at point B; Figure 7 yes Figure 4 A magnified structural diagram at point C; Figure 8 This is a first-view structural schematic diagram of the linear vibration component of the present invention; Figure 9 This is a second-view structural schematic diagram of the linear vibration component of the present invention; Figure 10 This is a third-view structural schematic diagram of the linear vibration component of the present invention; Figure 11 This is a first-view structural diagram of the sampling component of the present invention; Figure 12 This is a schematic diagram of the sampling component structure from a second perspective of the present invention; Figure 13 This is a schematic diagram of the connection between the T-shaped frame and the limiting rod of the present invention.

[0024] Reference numerals: 11. Moving frame; 12. Casters; 13. Spectrophotometer; 14. Control panel; 15. Drive motor; 16. Vacuum pump; 17. Hoses; 2. Sampling assembly; 21. Fixing rod; 22. Synchronous belt assembly; 23. T-shaped frame; 24. No. 1 protruding rod; 25. No. 1 connecting rod; 26. Rotating rod; 27. No. 1 slide rail; 28. Limiting rod; 29. ​​Slide plate; 210. Hollow tube; 211. Sea 212. Swing plate; 213. No. 2 slide groove; 214. Spring rod; 3. Linear vibration assembly; 31. Connecting frame; 32. Slider; 33. Test tube; 34. Through hole; 35. Test paper; 36. Colorimetric paper; 37. Servo motor; 38. Return spring; 39. Drive rod; 310. No. 2 connecting rod; 311. No. 2 protruding rod; 312. No. 1 bevel gear; 313. L-shaped connecting seat; 314. No. 2 bevel gear. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0026] like Figures 1-10This embodiment of an automatic sampling and concentration detection device for disinfectant residue includes a movable frame 11 with several casters 12 installed at the bottom corners. A control panel 14 is installed on the top side of the movable frame 11, and is electrically connected to components within the device via wires. A handrail is provided on the top of the movable frame 11 on the side of the control panel 14. A spectrophotometer 13 is installed on the top of the movable frame 11 away from the control panel 14, and a linear vibration component 3 is installed on the top of the spectrophotometer 13 for linearly oscillating the residual liquid to promote mixing of the test liquid and the colorimetric reagent. The linear vibration component 3 includes a connecting frame 31 fixed to the top of the spectrophotometer 13, and the connecting frame 31 has an L-shaped structure. Two placement slots are provided on the top side of the connecting frame 31, and a through hole 34 is provided on the side of the connecting frame 31 facing the control panel 14. The entire process requires no manual intervention for sample distribution, and qualitative and quantitative analysis can be completed in a single sampling. "Dual detection significantly shortens the detection cycle and avoids the potential deviations caused by 'sampling twice,' such as the volatilization of disinfectant residues at different sampling times, uneven residual concentrations at different sampling locations, and contamination or loss during manual sample transfer. The use of homologous samples ensures that the colorimetric reaction of the test strip 35 and the absorbance detection by spectrophotometry reflect the true concentration of the same residual liquid. The two results can be directly compared and mutually verified, avoiding detection contradictions caused by sample differences. The through hole 34 is located in the middle of the placement slot of the connecting frame 31, and the test strip 35 is placed in the placement slot of the connecting frame 31. A colorimetric paper 36 is pasted on the middle of one side of the connecting frame 31, and the colorimetric paper 36 and the through hole 34 are on the same plane. Hollow slots are opened through both sides of the connecting frame 31, and a slider 32 is set in the hollow slot of the connecting frame 31. The slider 32 is slidably connected to the connecting frame 31, and the connecting frame 31 limits the slider 32. The top of the slider 32 is set with an inverted conical structure, and a test tube 33 is locked inside the slider 32."

[0027] like Figures 2-10As shown, the bottom of test tube 33 is located inside spectrophotometer 13. Return springs 38 are fixedly connected to both sides of slider 32, and the other end of each return spring 38 is fixedly connected to the inner wall of connecting frame 31. The bottom of connecting frame 31, away from control panel 14, is open. Two sliders 32 are rotatably connected to a second protruding rod 311 and a second connecting rod 310 on the side facing the open end of connecting frame 31, respectively. An L-shaped connecting seat 313 is rotatably connected to the side of the second protruding rod 311 away from slider 32. Return springs on both sides of slider 32... Spring 38 provides buffering and restoring force, ensuring smooth and uniform oscillation. This drives the test tube 33, which is engaged within slider 32, to vibrate synchronously and linearly. This ensures that the test solution and colorimetric reagent in test tube 33 are in full contact and react completely, avoiding concentration calculation errors caused by incomplete local reactions. The L-shaped connector 313 is located at the connection between the second protrusion 311 and slider 32. Simultaneously, the side of the L-shaped connector 313 furthest from the second protrusion 311 is rotatably connected to the first bevel gear 312. The first bevel gear 312 drives the transmission... A second bevel gear 314 is connected and rotatably connected to an L-shaped connecting seat 313. A drive rod 39 is slidably connected to the second bevel gear 314. A limit strip is welded to the outer wall of the drive rod 39. The drive rod 39 does not contact the L-shaped connecting seat 313. The limit strip on the drive rod 39 limits the movement of the second bevel gear 314. Both ends of the drive rod 39 are rotatably connected to a connecting frame 31. A servo motor 37 is installed on one side of the connecting frame 31. This design is suitable for handling complex residual liquids containing detergents, grease, and other impurities. Uniform oscillation can also break the encapsulation of impurities on the effective components, allowing the colorimetric reagent to fully combine with the disinfection effective components (such as sodium hypochlorite and quaternary ammonium salts), improving the accuracy of the detection results in terms of the true residual concentration. Furthermore, a drive shaft is installed at the output end of the servo motor 37, and the drive shaft at the output end of the servo motor 37 is rotatably connected to the connecting frame 31. The rotatable end of the drive shaft at the output end of the servo motor 37 is connected and fixed to the drive rod 39, and the second protruding rod 311 and the second connecting rod 310 are rotatably connected at the end away from the slider 32.

[0028] like Figures 1-13As shown, sampling components 2 are fixedly connected to the inner walls of the movable frames 11 located on both sides of the control panel 14. These components are used to sample and quantitatively transfer residual disinfectant liquid. The sampling components 2 include T-shaped frames 23 fixedly connected to both sides of the inner walls of the movable frames 11. A rotating rod 26 is rotatably connected to the top of one side of the T-shaped frame 23. A connecting rod 25 is rotatably connected to the top of the side of the rotating rod 26 away from the T-shaped frame 23. The other end of the connecting rod 25 is rotatably connected to a protruding rod 24. At the same time, the other end of the protruding rod 24 is rotatably connected to the T-shaped frame 23. Next, the T-shaped frames 23 located on both sides of the moving frame 11 are rotatably connected to the synchronous belt assembly 22. A fixing rod 21 is fixedly connected between the synchronous pulleys at the bottom of the synchronous belt assembly 22 located on both sides of the moving frame 11. Due to the squeezing action, a stable and controllable pressure is applied, ensuring that the reaction area of ​​the test strip 35 is fully and evenly wetted, avoiding uneven application, localized over-drying or over-wetting that may occur with manual application. This results in more uniform color development of the test strip 35 and more accurate color difference interpretation. Furthermore, the two ends of the fixing rod 21 rotate with the inner wall of the moving frame 11. A drive motor 15 is mounted on one outer wall of the movable frame 11, and a drive shaft is mounted on the output end of the drive motor 15. The drive shaft at the output end of the drive motor 15 is rotatably connected to the movable frame 11. The through end of the drive shaft at the output end of the drive motor 15 is fixedly connected to the fixed rod 21. The synchronous pulley connecting shaft at the top of the synchronous belt assembly 22 is rotatably connected to the T-shaped frame 23. The through end of the synchronous pulley connecting shaft at the top of the synchronous belt assembly 22 is fixedly connected to the first protruding rod 24. The rotating rod 26 is located away from the T-shaped frame. One end of 23 has a first chute 27 through which the three functions of sampling, dispensing and pretreatment (squeezing) are integrated into a smooth mechanical action cycle (extension-flipping-extension), eliminating the need for additional steps and equipment such as pipetting and pouring, and shortening the time from sampling to obtaining preliminary (test paper 35) results. The limiting rod 28 on the side of the slide plate 29 away from the T-shaped frame 23 is located in the first chute 27, and the limiting rod 28 is slidably connected to the rotating rod 26. At the same time, the limiting rod 28 slides along the first chute 27 axially and is limited and constrained by it.

[0029] like Figures 2-13As shown, the limiting rod 28 facing the T-shaped frame 23 is located in the second slide groove 213, and the limiting rod 28 slides along the long strip through groove of the second slide groove 213 and is guided and constrained by it. At the same time, the limiting rod 28 is slidably connected to the T-shaped frame 23. A hollow tube 210 is fixedly connected through the middle of the slide plate 29, and a sponge 211 is installed at the bottom of the hollow tube 210. When the sponge 211 is squeezed to contact the test paper 35, it actually acts as a primary filter. Large particles and some fibrous impurities may be blocked by the sponge 211 and will not enter the test tube 33. The liquid dripped into the test tube 33 is relatively clear, reducing the possibility of direct interference with the spectrophotometric optical path and improving the success rate and accuracy of precision detection. At the same time, a flexible tube 17 is installed at the top of the hollow tube 210. The sponge 211 and the through hole 34 are on the same straight line. A vacuum pump 16 is installed at the other end of the flexible tube 17. The vacuum assists to make the liquid more fully and quickly adsorbed into the core of the sponge 211, and then in the subsequent flipping-squeezing step... In this process, the liquid can be released more controllably and completely from the core of the sponge 211, improving the accuracy and repeatability of the liquid volume dropped into the test tube 33, providing a more stable sample volume for spectrophotometry. The vacuum pump 16 is fixedly mounted on the top of the moving frame 11, and is connected to the hollow tube 210 via a flexible hose 17. A second sliding groove 213 is provided through the T-shaped frame 23, with elongated through-grooves at both ends and a central section in the second sliding groove 213. The slide has a semi-circular through-slot structure, and the two ends of the second slide 213 are set at a 90-degree angle. The T-shaped frame 23 is rotatably connected to the side away from the moving frame 11. The bottom of the slide 212 is hollow. The bottom of the slide 212 is equipped with a slide plate 29, and the slide plate 29 is slidably connected to the slide 212. At the same time, the slide 212 limits the slide plate 29. Limiting rods 28 are welded on both sides of the top of the slide plate 29, and spring rods 214 are installed on both sides of the bottom of the slide plate 29.

[0030] The working principle of this embodiment is as follows: First, the test tube 33 containing the neutralizing agent is placed inside the slider 32. At this time, the bottom of the test tube 33 is located inside the spectrophotometer 13. Then, the operator can push the handrail on one side of the moving frame 11 and push the device to the designated position under the action of the universal wheels 12 at the bottom of the moving frame 11. The device is started by operating the control panel 14, and the control panel 14 transmits the command to the drive motor 15 and the vacuum pump 16.

[0031] The drive motor 15 drives the fixed rod 21 to rotate through the transmission shaft, thereby causing the synchronous belt assemblies 22 on both sides of the moving frame 11 to rotate synchronously. This causes the first protruding rod 24 at the top of the two T-shaped frames 23 to rotate simultaneously. The rotation of the first protruding rod 24 drives the first connecting rod 25 to move synchronously and rotate relative to the first protruding rod 24. The movement of the first connecting rod 25 causes the rotating rod 26 to swing around the fulcrum on the T-shaped frame 23, causing the slide plate 29 to slide downward at the bottom of the swing plate 212. At the same time, the limiting rod 28 located in the first slide groove 27 slides axially and is constrained by the first slide groove 27.

[0032] Meanwhile, the limiting rod 28 on the other side of the slide plate 29 moves downwards synchronously along the long section of the second slide groove 213. When the spring rod 214 at the bottom of the slide plate 29 moves down to contact the residual disinfectant liquid on the ground, the sponge 211 presses down and the residual disinfectant liquid is fully absorbed by the sponge 211. At the same time, the spring rod 214 contracts and deforms, and the vacuum pump 16 starts simultaneously. Through the hose 17 and the hollow tube 210, a negative pressure passage is formed, and sampling is completed instantly, greatly reducing the evaporation window and ensuring more thorough absorption. After sampling is completed... The drive motor 15 continues to run, driving the first protruding rod 24 to continue rotating. The first protruding rod 24 pushes the first connecting rod 25 to move in the opposite direction, causing the rotating rod 26 to swing back around the fulcrum, driving the slide plate 29 to rise along the swing plate 212. At this time, the limiting rod 28 transitions and turns in the arc section of the second slide groove 213, driving the swing plate 212 to rotate 90 degrees around the fulcrum on the T-shaped frame 23, realizing the change of motion direction. During the reset process of the slide plate 29, the spring rod 214 returns to its original state, the sponge 211 detaches from the surface of the residual liquid, and the sampling is completed.

[0033] At this time, the swing plate 212 rotates to a horizontal state, and the first protruding rod 24 continues to rotate, pushing the first connecting rod 25 to drive the rotating rod 26 to continue swinging, so that the limiting rod 28 moves along the second sliding groove 213 in the horizontal direction of the T-shaped frame 23 towards the spectrophotometer 13, so that the sponge 211 is precisely aligned with the through hole 34 and squeezed against the side wall of the connecting frame 31. The vacuum pump 16 transmits the collection liquid through the hose 17 and the hollow tube 210 to the sponge 211 to fully contact and react with the test paper 35 in the through hole 34. The excess sampling liquid flows into the test tube 33 from the inverted conical end of the top of the slider 32 under the action of gravity.

[0034] Then the drive motor 15 continues to run, driving the slide plate 29 to complete its final stroke and return to its initial position to stop running. At this time, the control panel 14 triggers the servo motor 37 to run, driving the drive rod 39 to rotate, which in turn causes the second bevel gear 314 to rotate synchronously. Through meshing transmission, the first bevel gear 312 drives the second cam 311 to rotate synchronously. The rotation of the second cam 311 allows the second connecting rod 310 to reciprocate with its hinge point as the fulcrum. Thus, under the cooperation of the return spring 38, the two sliders 32 slide towards each other in the connecting frame 31, causing linear oscillation of the sample liquid in the test tube 33.

[0035] During the rotation of the second protruding rod 311, the first bevel gear 312, the L-shaped connecting seat 313 and the second bevel gear 314 reciprocate along the linear direction of the drive rod 39 to adapt to the change in the reciprocating stroke of the slider 32.

[0036] After the sample in test tube 33 is shaken and mixed, control panel 14 automatically starts spectrophotometer 13 to perform spectrophotometric concentration detection on test tube 33. Spectrophotometer 13 scans the sample solution through a preset wavelength, collects absorbance data in real time and transmits it to control panel 14 for analysis and processing. The system automatically calculates the concentration of the target substance based on the standard curve.

[0037] While the spectrophotometer 13 is performing the test, staff can directly compare the color of the test strip 35 with the colorimetric paper 36 on the connecting frame 31 to quickly determine the approximate concentration range of the target substance in the sample, thus achieving preliminary screening. The colorimetric results are corroborated by the accurate detection data of the spectrophotometer 13, improving the reliability of the test.

[0038] The above description is merely a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention.

Claims

1. An automatic sampling and concentration detection device for disinfectant residue, comprising a movable frame (11), wherein a plurality of casters (12) are installed at the bottom corners of the movable frame (11), and a control panel (14) is installed at the center of one side of the top of the movable frame (11), characterized in that: A handrail is provided on the top of the movable frame (11) located on one side of the control panel (14). A spectrophotometer (13) is installed on the top of the movable frame (11) away from the control panel (14), and a linear vibration component (3) is installed on the top of the spectrophotometer (13) to linearly oscillate the residual liquid to promote the mixing of the test liquid and the colorimetric reagent. Sampling components (2) are fixedly connected to the inner walls of the movable frame (11) located on both sides of the control panel (14) for sampling and quantitative transfer of disinfectant residue liquid.

2. The automatic sampling and concentration detection device for disinfectant residue according to claim 1, characterized in that, The linear vibration assembly (3) includes a connecting frame (31) that is fixed to the top of the spectrophotometer (13). The connecting frame (31) is L-shaped. Two placement slots are opened on one side of the top of the connecting frame (31). A through hole (34) is opened through the side of the connecting frame (31) facing the control panel (14). The through hole (34) is located in the middle of the placement slot of the connecting frame (31). Test paper (35) is placed in the placement slot of the connecting frame (31). Colorimetric paper (36) is pasted on the middle of one side of the connecting frame (31). The colorimetric paper (36) and the through hole (34) are located on the same plane. Hollow slots are opened through both sides of the connecting frame (31).

3. The automatic sampling and concentration detection device for disinfectant residue according to claim 2, characterized in that, A slider (32) is provided in the hollow groove of the connecting frame (31), and the slider (32) is slidably connected to the connecting frame (31). At the same time, the connecting frame (31) limits the slider (32). The top of the slider (32) is set in an inverted cone shape, and a test tube (33) is locked inside the slider (32). At the same time, the bottom of the test tube (33) is located inside the spectrophotometer (13). A reset spring (38) is fixedly connected to both sides of the slider (32), and the other end of the reset spring (38) is fixedly connected to the inner wall of the connecting frame (31). The bottom of the connecting frame (31) on the side away from the control panel (14) is set in an open state. The two sliders (32) facing the open end of the connecting frame (31) are respectively rotatably connected to the second protrusion (311) and the second connecting rod (310), and the second protrusion (311) and the second connecting rod (310) are rotatably connected to each other on the side away from the slider (32).

4. The automatic sampling and concentration detection device for disinfectant residue according to claim 3, characterized in that, The second protruding rod (311) is rotatably connected to an L-shaped connecting seat (313) on the side away from the slider (32), and the L-shaped connecting seat (313) is located at the connection between the second protruding rod (311) and the slider (32). At the same time, the L-shaped connecting seat (313) is rotatably connected to a first bevel gear (312) on the side away from the second protruding rod (311). The first bevel gear (312) is connected to a second bevel gear (314) on one side, and the second bevel gear (314) is rotatably connected to the L-shaped connecting seat (313). The second bevel gear (314) is slidably connected to a drive rod (39).

5. The automatic sampling and concentration detection device for disinfectant residue according to claim 4, characterized in that, The drive rod (39) has a limit strip welded to its outer wall. The drive rod (39) does not contact the L-shaped connecting seat (313). The limit strip of the drive rod (39) limits the second bevel gear (314). Both ends of the drive rod (39) are rotatably connected to the connecting frame (31). A servo motor (37) is installed on one side of the connecting frame (31). A transmission shaft is installed at the output end of the servo motor (37). The transmission shaft at the output end of the servo motor (37) is rotatably connected to the connecting frame (31). The through end of the transmission shaft at the output end of the servo motor (37) is fixedly connected to the drive rod (39).

6. The automatic sampling and concentration detection device for disinfectant residue according to claim 2, characterized in that, The sampling component (2) includes a T-shaped frame (23) fixedly connected to both sides of the inner wall of the movable frame (11), and the T-shaped frame (23) has a second sliding groove (213) through it. The two ends of the second sliding groove (213) are long strip-shaped through grooves, and the middle part of the second sliding groove (213) is a semi-arc-shaped through groove. At the same time, the two ends of the second sliding groove (213) are set at a 90-degree angle. The side of the T-shaped frame (23) away from the movable frame (11) is rotatably connected to a swing plate (212), and the bottom of the swing plate (212) is hollow. The bottom of the swing plate (212) is provided with a sliding plate (29), and the sliding plate (29) is slidably connected to the swing plate (212). At the same time, the swing plate (212) limits the sliding plate (29). Limiting rods (28) are welded on both sides of the top of the sliding plate (29), and spring rods (214) are installed on both sides of the bottom of the sliding plate (29).

7. The automatic sampling and concentration detection device for disinfectant residue according to claim 6, characterized in that, The limiting rod (28) facing the T-shaped frame (23) is located in the second slide groove (213), and the limiting rod (28) slides along the long strip through groove of the second slide groove (213) and is guided and constrained by it. At the same time, the limiting rod (28) is slidably connected to the T-shaped frame (23). A hollow tube (210) is fixedly connected through the middle of the slide plate (29), and a sponge (211) is installed at the bottom of the hollow tube (210). At the same time, a hose (17) is installed at the top of the hollow tube (210). The sponge (211) and the through hole (34) are located on the same straight line. A vacuum pump (16) is installed at the other end of the hose (17), and the vacuum pump (16) is fixedly installed at the top of the moving frame (11). The vacuum pump (16) is connected to the hollow tube (210) through the hose (17).

8. The automatic sampling and concentration detection device for disinfectant residue according to claim 7, characterized in that, A rotating rod (26) is rotatably connected to the top of one side of the T-shaped frame (23), and a first slide groove (27) is opened through the end of the rotating rod (26) away from the T-shaped frame (23). The limiting rod (28) on the side of the sliding plate (29) away from the T-shaped frame (23) is located in the first slide groove (27), and the limiting rod (28) is slidably connected to the rotating rod (26). At the same time, the limiting rod (28) slides axially along the first slide groove (27) and is limited and constrained by it.

9. The automatic sampling and concentration detection device for disinfectant residue according to claim 8, characterized in that, The rotating rod (26) is rotatably connected to a connecting rod (25) on the top side away from the T-shaped frame (23), and the other end of the connecting rod (25) is rotatably connected to a protruding rod (24). At the same time, the other end of the protruding rod (24) is rotatably connected to the T-shaped frame (23). The T-shaped frame (23) located on both sides of the movable frame (11) is rotatably connected to a synchronous belt assembly (22), and the synchronous pulley connecting shaft at the top of the synchronous belt assembly (22) is rotatably connected to the T-shaped frame (23). At the same time, the through end of the synchronous pulley connecting shaft at the top of the synchronous belt assembly (22) is connected and fixed to the protruding rod (24).

10. The automatic sampling and concentration detection device for disinfectant residue according to claim 9, characterized in that, A fixed rod (21) is fixedly connected between the synchronous pulleys at the bottom of the synchronous belt assembly (22) located on both sides of the movable frame (11), and the two ends of the fixed rod (21) are rotatably connected to the inner wall of the movable frame (11). A drive motor (15) is installed on one side of the outer wall of the movable frame (11), and a transmission shaft is installed at the output end of the drive motor (15). At the same time, the transmission shaft at the output end of the drive motor (15) is rotatably connected to the movable frame (11), and the through end of the transmission shaft at the output end of the drive motor (15) is fixedly connected to the fixed rod (21).

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